How can we improve Terrain Navigator Pro? (Desktop Software)

I would like to be able to scan a paper trail map and use it as a layer in TNP

Many parks have campsite and trail maps in paper format. I would like to be able to scan the paper map into a digital format such as a PDF or JPEG and overlay it as a semi transparent layer over a topo map in TNP so that the local trail and campsite information appears on the topo map. I often do not have access to a geocoded TIFF file and would like to simply overlay the map and manipulate it into position using a layer.